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10.12.2008 at 05:36PM PDT, ID: 23808311
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8.2

conditional date check on inserting / updating and having unique rows only

Asked by MrAgile in MS SQL Server

Tags: , , ,

Hi There,

I have a table contains a start date and end date columns. I need to be able to check that the dates passed into the proc do not exist in the table already, if they do then I will just give the user a message to choose another date. I need them to be totally unique to the point where even the times should not overlap. I'm just not sure of the correct way to do this. The columns are datetime data types.

Can someone help with a working sample please?Start Free Trial
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set @Existing = ( 
select count(*) from table
where [Start] <= convert(datetime,@Start,109) and [End] <= convert(datetime,@End,109)
 
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13/10/2008 12:00:00 AM
[+][-]10.12.2008 at 05:56PM PDT, ID: 22699634

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About this solution

Zone: MS SQL Server
Tags: sql server, date comparision, unique rows, overlapping dates
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Solution Provided By: chapmandew
Participating Experts: 1
Solution Grade: A
 
 
[+][-]10.12.2008 at 07:01PM PDT, ID: 22699852

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[+][-]10.12.2008 at 07:10PM PDT, ID: 22699889

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[+][-]10.12.2008 at 07:46PM PDT, ID: 22699970

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[+][-]10.29.2008 at 03:17PM PDT, ID: 22836308

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